Perform the indicated operations. Write the answer in the form a + bj.(3 - 6j) + (5 + 9j)
A. -2 + 15j
B. 8 + 3j
C. 8 - 3j
D. -8 - 3j
Answer: B
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The two triangles below are similar. Find the unknown side lengths.?CAB is similar to ?CSR
Given that SC = 20, AS = 30, RS =6, find AB.
A. 16 B. 15 C. 12 D. 9
Two sides and an angle are given. Determine whether the given information results in one triangle, two triangles, or no triangle at all. Solve any triangle(s) that results.a = 7, b = 9, B = 49°
A. two triangles A1 = 76.01°, C1 = 54.99°, c1 = 7.60 or A2 = 103.99°, C2 = 27.01, c2 = 12.14 B. one triangle A = 35.94°, C = 95.06°, c = 11.88 C. one triangle A = 76.01°, C = 54.99°, c = 7.60 D. no triangle
Solve the problem.To remodel a bathroom, a contractor charges $30 per hour plus material costs, which amount to $4800. Therefore, the total cost to remodel the bathroom is given by 
where x is the number of hours the contractor works. Find a formula for 
What does 
compute?
A. f -1(x) = 
- 4800; This computes the total cost if the contractor works x hours.
B. f -1(x) = 
- 160; This computes the number of hours worked if the total cost is x dollars.
C. f -1(x) = 
- 160; This computes the total cost if the contractor works x hours.
D. f -1(x) = 
- 4800; This computes the number of hours worked if the total cost is x dollars.
Find an equation of a parabola satisfying the given conditions.Focus at (4, 0), directrix x = -4
A. y2 = -16x
B. y = 
x2
C. x = 
y2
D. -16y = x2